102037221 has 24 divisors (see below), whose sum is σ = 173156256. Its totient is φ = 57083040.

The previous prime is 102037217. The next prime is 102037253. The reversal of 102037221 is 122730201.

It is not a de Polignac number, because 102037221 - 2² = 102037217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102037194 and 102037203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102037291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38355 + ... + 40928.

It is an arithmetic number, because the mean of its divisors is an integer number (7214844).

Almost surely, 2^102037221 is an apocalyptic number.

102037221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102037221 is a deficient number, since it is larger than the sum of its proper divisors (71119035).

102037221 is a wasteful number, since it uses less digits than its factorization.

102037221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79313 (or 79310 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 102037221 is about 10101.3474843706. The cubic root of 102037221 is about 467.2896988480.

Adding to 102037221 its reverse (122730201), we get a palindrome (224767422).

It can be divided in two parts, 10203 and 7221, that added together give a square (17424 = 132²).

The spelling of 102037221 in words is "one hundred two million, thirty-seven thousand, two hundred twenty-one".